The first said expectations for full-year headline results are unchanged as overall trading has "remained in line with previous guidance".
It added that overall stronger performances from its international devisions would offset poor UK figures.
-- Advertisement --
Last year, the Group reported a £70 million charge for the troubled Glasgow Recycling and Renewable Energy Centre project. Viridor, the schemes developer, has since cancelled Interserve's contract on the project.
In a trading statement today, the firm said: "The net debt position of the group as at 31st December 2016 is expected to be better than previously guided, at £270-280m, driven by strong collections and other working capital management measures, which have more than offset an increased level of cash outflows from the exited Energy from Waste business."
(LM)
